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Bulgaria
Chelopech Mine

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 Location:
60 km E from Sofia, Bulgaria

  Address:

Chelopech
Bulgaria
2087
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Copper
  • Silver
Mining Method
  • Sub-level open stoping (SLOS)
  • Longhole open stoping
  • Paste backfill
Production Start...
Mine Life2030


Owners

Source: p. 7
CompanyInterestOwnership
Dundee Precious Metals Inc. 100 % Indirect
Dundee Precious Metals Chelopech EAD (operator) 100 % Direct
Dundee Precious Metals Chelopech EAD, which produces a gold-copper concentrate containing gold, copper and silver, and a pyrite concentrate containing gold, from its Chelopech mine located east of Sofia, Bulgaria, is a wholly owned subsidiary of Dundee Precious Metals Inc.

Contractors

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Deposit Type

  • Epithermal
  • Breccia pipe / Stockwork
  • Vein / narrow vein


Summary:

The Chelopech region consists of a Precambrian metamorphic basement consisting of gneisses, amphibolites, and metasediments overlain by Upper Cretaceous, volcano-sedimentary sequences which include the Chelopech Formation; the primary host to mineralisation. The Chelopech Formation reaches thicknesses of up to 2,000 m and consists of Lower and Upper units.

Mineralisation is hosted within the Lower Chelopech Formation and is characterised by typical epithermal, high-sulphidation (HS) alteration. Alteration and mineralisation are typically zonal with central, high-grade units associated with well-developed stockworks and massive sulphide mineralisation. These units are surrounded by lower-grade haloes dominated by disseminated sulphides and pervasive silica overprinting. These two zones are respectively referred to as “Stockwork” and “Silica Envelopes” and are used as hard boundaries during the estimation of Mineral Resources.

Mineralisation
Three successive mineralisation stages have been recognised at Chelopech, including an early iron- sulphur stage consisting mainly of disseminated and massive pyrite, a second copper-arsenic-sulphur stage which is the economic copper and gold stage, and a late lead-zinc stage. These display different geometries, including veins, breccias, massive and disseminated sulphides.

The mineralisation occurs in a range of different morphologies, including lens-like, pipe-like and columnar bodies that typically ........


Mining Methods

  • Sub-level open stoping (SLOS)
  • Longhole open stoping
  • Paste backfill


Summary:

Underground mining production is performed using sublevel long-hole open stoping methods. The various orebodies are developed at nominal 30 m vertical intervals and accessed by major declines in both the Western and Central areas. Stopes are designed to be 20 m wide between the levels. The length of the stope depends on the geotechnical conditions, but can range between 20 m and 60 m. The most recent trend of stope design is to keep a 20–30 m length and 60 m height, where geological and geotechnical conditions are suitable. This allows for improvement in ore handling and dust suppression during ore mucking because of shorter remote loading. Ore is delivered via ore passes, or via trucks, to the ROM bin above the crusher. The crusher feeds up to 400 tph to a system of eight conveyors, to transport the ore to the surface stockpile.

Once mined via an “end-slice” methodology, stopes are backfilled with “paste-fill” produced from the mill tailings to which cement is added and which is gravity fed underground via a system of borehole and pipes to the stopes being filled.

Multiple horizons are designed in each ore body so that multiple stopes can be in production at any one time. Simulations have shown that at least six stopes shall need to be producing ore to maintain ore production of 2.2 Mtpa, with up to 22 stopes being drilled, “mucked” and filled at any one time.

Mine Ventilation
The ventilation system has been in a stable configuration ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityProductUnits2022202120202019201820172016
Gold Metal in concentrate koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required201198166
Copper Metal in copper conc. M lbs  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in copper conc. oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Pyrite Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required2,203,242 t2,216,753 t2,218,717 t
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required2,211,067 t2,211,557 t2,232,799 t
Annual production capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required400,000 t of pyrite concentrate400,000 t of pyrite concentrate400,000 t of pyrite concentrate
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required2.2 Mt2.2 Mt2.2 Mt
^ Guidance / Forecast.
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Reserves at December 31, 2021:
Mineral Reserves are based on a NSR-less-costs cut-off value of US$0/t. The total cost applied was approximately $45/t which is a sum of operational costs of approximately $40/t (variable by stope location) and sustaining capital of $5/t.

Mineral Resources are based on a NSR-less-costs cut-off of US$0/t. The total cost applied was approximately $45/t which is a sum of operational costs of approximately $40/t and sustaining capital of $5/t.

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 19.3 Mt Gold 2.72 g/t 1.7 M oz
Proven & Probable 19.3 Mt Copper 0.8 % 341.9 M lbs
Proven & Probable 19.3 Mt Silver 7.6 g/t 4.72 M oz
Measured & Indicated 13.8 Mt Gold 2.84 g/t 1.258 M oz
Measured & Indicated 13.8 Mt Copper 0.89 % 270 M lbs
Measured & Indicated 13.8 Mt Silver 10.56 g/t 4.679 M oz
Inferred 2.9 Mt Gold 2.36 g/t 0.223 M oz
Inferred 2.9 Mt Copper 0.82 % 53 M lbs
Inferred 2.9 Mt Silver 9.2 g/t 0.869 M oz

Commodity Production Costs:

CommodityUnits202220212020201920182017
Total cash costs Copper USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 0.8 / lb†   0.74 / lb†  
Total cash costs Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 342 / oz†   326 / oz†  
Total cash costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 539 / oz†   598 / oz†  
All-in sustaining costs (sold) Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†
^ Guidance / Forecast.
† Net of By-Product.
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Operating Costs:

Units2021202020192018201720162015
Total operating costs ($/t milled) USD 47.138.436.336.434.23337.1

Financials:

Units2022202120202019201820172016
Capital expenditures (planned) M USD  ......  Subscription required
Growth Capital M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 4.1   3.7   2.9  
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 9.3   12.8   10.4  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 13.4   16.5   13.3  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 213.6   206.3   161.6  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 102.3   56.1   37.8  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 92.3   50.2   33.7  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 116.8   107.9   87.3  
Subscription required - Subscription is required


Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment as of March 31, 2022:
HME TypeModelQuantityStatus
Drill ....................... Subscription required ....................... Subscription required Existing
Drill (long hole) ....................... Subscription required ....................... Subscription required Existing
Grader ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Loader ....................... Subscription required ....................... Subscription required Existing
Loader (FEL) ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Personnel Carrier ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required Proposed
Rockbreaker ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required Proposed
Shotcreter ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Trans Mixer ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Truck (underground) ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required Proposed
Truck (water) ....................... Subscription required Existing
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Mar 31, 2022
....................... Subscription required ....................... Subscription required Subscription required May 30, 2022
....................... Subscription required ....................... Subscription required Subscription required May 30, 2022
....................... Subscription required ....................... Subscription required Subscription required May 30, 2022
....................... Subscription required ....................... Subscription required Subscription required May 30, 2022
....................... Subscription required ....................... Subscription required Subscription required May 30, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Quarterly Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Annual Report 2018
Technical Report 2018
Annual Information Form 2017
Annual Report 2017
Annual Information Form 2016
Annual Report 2016
Technical Report 2016
Press Release 2006
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